摘要:
A device is proposed for monitoring the combustion process in internal combustion engines, a direct monitoring and a monitoring of individual combustion processes, in particular individual combustion chambers, being possible. This is achieved using a waveguide, which is integrated in a component, which protrudes into the combustion chamber.
摘要:
A passive, high-temperature-resistant resistor element for measuring temperature is provided, the resistor element having an essentially interior insulating layer and two exterior conducting layers of a ceramic composite structure; the conducting layers being connected to one another at the tip of the resistor element; and the ceramic composite structure including trisilicon tetranitride, a metal silicide, and yttrium oxide or trisilicon tetranitride, a metal silicide, and a matrix phase of SixOyCzNw, where x signifies 1–2, y signifies 0–2, and w signifies 0–2. A combination element of this resistor element and a sheathed type glow plug, for example, is also provided.
摘要翻译:提供了用于测量温度的被动耐高温电阻元件,电阻器元件具有基本上内部的绝缘层和两个陶瓷复合结构的外导电层; 所述导电层在所述电阻元件的尖端彼此连接; 以及包含三硅四氮化物,金属硅化物和氧化钇或四氧化三铁,金属硅化物和Si x O O y C y的基质相的陶瓷复合结构体 其中x表示1-2,y表示0-2,w表示0-2。 还提供了该电阻元件和护套型电热塞的组合元件。
摘要:
A ceramic sheathed-element glow plug is proposed in which a metallic tubular holder holds a ceramic U-shaped heating device in a cantilevered fashion at its combustion chamber side end and has a terminal stud for applying a voltage to the ceramic heating device on the end remote from the combustion chamber. At its end enclosed by the holder, the ceramic heating device has a segment of greatest diameter and is coated with an insulating layer which has recesses for an electrical contacting. One recess is provided at the end of the ceramic heating device remote from the combustion chamber and a second recess is provided on the external wall of the ceramic heating device. A for an electrically conductive sealing compound is provided between the external wall of the ceramic heating device and the internal wall of the holder.
摘要:
A ceramic sheathed-type glow plug, whose ceramic heating element is made of an electrically conductive conducting layer and an electrically insulating layer, is described. The conducting layer is made of lead layers and a heating layer. The higher specific electrical resistance of the heating layer allows the temperature of the heating layer and the combustion chamber to be determined. The electrical contact between a connector element and the heating element is established by a contacting element, which is in the form of a pellet made of an electrically conductive powder.
摘要:
A ceramic sheathed element glow plug has a tubular metal casing holding a ceramic U-shaped heating device cantilevered at its end facing the combustion chamber, and on the end remote from the combustion chamber, it has a terminal pin for applying a voltage to the ceramic heating device. In the metal casing, a ceramic bushing and a ring follow the ceramic heating device at the end remote from the combustion chamber.
摘要:
A pin heater in a sheathed-element glow plug and a sheathed-element glow plug for internal combustion engines, which have improved electrical and mechanical properties, are described. The pin heater has at least one essentially internal insulating layer and one essentially external first conductive layer, both layers including ceramic composite structures. The pin heater includes a second conductive layer, which also includes a ceramic composite structure. The second conductive layer is bonded to the first conductive layer in the region of a combustion chamber side tip of the pin heater. The second conductive layer runs inside the insulating layer.
摘要:
A sheathed-element glow plug to be mounted in a combustion chamber is proposed, a rod-shaped heating element being situated in a concentric bore hole of the housing. The heating element has a first current-carrying layer, a second current-carrying layer, and an insulating layer, the insulating layer separating the first current-carrying layer and the second current-carrying layer. The first current-carrying layer and the second current-carrying layer being connected at the end of the heating element on the combustion chamber side by a conducting-layer crosspiece. The first current-carrying layer and the second current-carrying layer are different lengths, the cross section of the first current-carrying layer in a first section at the end of the heating element away from the combustion chamber being greater than the cross section of its remaining length, and the second current-carrying layer not extending into the first section.
摘要:
A method and a device for detecting the exchange of sheathed-element glow plugs (GPE) in a combustion engine, in which at least one electric characteristic quantity of at least one glow plug is measured at the beginning of a driving cycle, an instantaneous value of this characteristic quantity is determined and compared to at least one stored value of the same electric variable quantity of this glow plug, which was determined at the beginning of at least one preceding driving cycle, and if the deviation of the instantaneous value from the stored value exceeds a specifiable threshold value, an exchange of the glow plug (GPE) will be inferred.
摘要:
A method and a device for correcting a signal of a sensor provide for maximally accurate drift compensation of a characteristics curve of the sensor. At least one characteristic quantity of the signal of the sensor is compared with a reference value. The signal of the sensor is corrected as a function of the comparison result. A value of the at least one characteristic quantity of the signal of the sensor derived from the signal of the sensor is formed as the reference value.
摘要:
A ceramic composite material is described, which is obtainable by at least partial pyrolysis of a starting mixture or of a starting body containing a polymer precursor material. The starting mixture or the starting body contains boron in a proportion of 0.1 wt.-% to 60 wt.-%. In addition, a method for manufacturing such a ceramic composite material is described, a boron-containing starting mixture including a polymer precursor material being subjected to an at least partial pyrolysis. Finally, a sheathed-element glow plug including the ceramic composite material as an insulating layer and/or conductive layer is described.